Datasheet AD7942 (Analog Devices) - 3
| 制造商 | Analog Devices |
| 描述 | 14-Bit, 250 kSPS PulSAR , Pseudo Differential ADC in MSOP/LFCSP |
| 页数 / 页 | 25 / 3 — AD7942. Data Sheet. TABLE OF CONTENTS. REVISION HISTORY. 6/14—Rev. B to … |
| 修订版 | C |
| 文件格式/大小 | PDF / 467 Kb |
| 文件语言 | 英语 |
AD7942. Data Sheet. TABLE OF CONTENTS. REVISION HISTORY. 6/14—Rev. B to Rev. C. 12/07—Rev. 0 to Rev. A. 6/08—Rev. A to Rev. B
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AD7942 Data Sheet TABLE OF CONTENTS
Features .. 1 Terminology .. 12 Applications ... 1 Theory of Operation .. 13 Application Diagram .. 1 Circuit Information .. 13 General Description ... 1 Converter Operation .. 13 Revision History ... 2 Typical Connection Diagram ... 14 Specifications ... 3 Digital Interface .. 16 Timing Specifications .. 5 Application Hints ... 23 Absolute Maximum Ratings .. 7 Layout .. 23 ESD Caution .. 7 Evaluating the Performance of AD7942 .. 23 Pin Configuration and Function Descriptions ... 8 Outline Dimensions ... 24 Typical Performance Characteristics ... 9 Ordering Guide .. 24
REVISION HISTORY 6/14—Rev. B to Rev. C 12/07—Rev. 0 to Rev. A
Changed QFN (LFCSP) Notation to LFCSP .. Throughout Changes to Table 1 ... 1 Added Patent Footnote .. 1 Changes to General Description Section ... 1 Changes to Evaluating the Performance of the AD7942 ... 23 Changes to Table 6 ... 7 Changes to Ordering Guide .. 24 Changes to Table 7 ... 8 Changes to Circuit Information Section ... 13
6/08—Rev. A to Rev. B
Changes to Table 9 .. 15 Changes to Features Section and General Description Section . 1 Changes to Figure 39 .. 21 Moved Figure 2 and Figure 3 .. 6 Changes to Figure 41 .. 22 Changes to Table 6 .. 8 Updated Outline Dimensions ... 24 Moved Terminology Section ... 12 Changes to Ordering Guide .. 24 Changes to Figure 41 .. 22
3/05—Revision 0: Initial Version
Changes to Ordering Guide .. 24 Rev. C | Page 2 of 24 Document Outline Features Applications Application Diagram General Description Table of Contents Revision History Specifications Timing Specifications Timing Diagrams Absolute Maximum Ratings ESD Caution Pin Configuration and Function Descriptions Typical Performance Characteristics Terminology Theory of Operation Circuit Information Converter Operation Transfer Functions Typical Connection Diagram Analog Input Driver Amplifier Choice Voltage Reference Input Power Supply Supplying the ADC from the Reference Digital Interface /CS Mode 3-Wire Without Busy Indicator /CS Mode 3-Wire with Busy Indicator /CS Mode 4-Wire Without Busy Indicator /CS Mode 4-Wire with Busy Indicator Chain Mode Without Busy Indicator Chain Mode with Busy Indicator Application Hints Layout Evaluating the Performance of AD7942 Outline Dimensions Ordering Guide
AD7942 Data Sheet TABLE OF CONTENTS
Features .. 1 Terminology .. 12 Applications ... 1 Theory of Operation .. 13 Application Diagram .. 1 Circuit Information .. 13 General Description ... 1 Converter Operation .. 13 Revision History ... 2 Typical Connection Diagram ... 14 Specifications ... 3 Digital Interface .. 16 Timing Specifications .. 5 Application Hints ... 23 Absolute Maximum Ratings .. 7 Layout .. 23 ESD Caution .. 7 Evaluating the Performance of AD7942 .. 23 Pin Configuration and Function Descriptions ... 8 Outline Dimensions ... 24 Typical Performance Characteristics ... 9 Ordering Guide .. 24
REVISION HISTORY 6/14—Rev. B to Rev. C 12/07—Rev. 0 to Rev. A
Changed QFN (LFCSP) Notation to LFCSP .. Throughout Changes to Table 1 ... 1 Added Patent Footnote .. 1 Changes to General Description Section ... 1 Changes to Evaluating the Performance of the AD7942 ... 23 Changes to Table 6 ... 7 Changes to Ordering Guide .. 24 Changes to Table 7 ... 8 Changes to Circuit Information Section ... 13
6/08—Rev. A to Rev. B
Changes to Table 9 .. 15 Changes to Features Section and General Description Section . 1 Changes to Figure 39 .. 21 Moved Figure 2 and Figure 3 .. 6 Changes to Figure 41 .. 22 Changes to Table 6 .. 8 Updated Outline Dimensions ... 24 Moved Terminology Section ... 12 Changes to Ordering Guide .. 24 Changes to Figure 41 .. 22
3/05—Revision 0: Initial Version
Changes to Ordering Guide .. 24 Rev. C | Page 2 of 24 Document Outline Features Applications Application Diagram General Description Table of Contents Revision History Specifications Timing Specifications Timing Diagrams Absolute Maximum Ratings ESD Caution Pin Configuration and Function Descriptions Typical Performance Characteristics Terminology Theory of Operation Circuit Information Converter Operation Transfer Functions Typical Connection Diagram Analog Input Driver Amplifier Choice Voltage Reference Input Power Supply Supplying the ADC from the Reference Digital Interface /CS Mode 3-Wire Without Busy Indicator /CS Mode 3-Wire with Busy Indicator /CS Mode 4-Wire Without Busy Indicator /CS Mode 4-Wire with Busy Indicator Chain Mode Without Busy Indicator Chain Mode with Busy Indicator Application Hints Layout Evaluating the Performance of AD7942 Outline Dimensions Ordering Guide